# vim: ts=2 sw=2 et ft=ruby # Call with an empty tape # $ turing.rb bb3.stm '' # Busy Beaver: 3-state, 2-symbol # state A 1. cond if: 'B', then: 2, else: 4 2. write symbol: '1', goto: 3 3. right goto: 6 4. write symbol: '1', goto: 5 5. right goto: 16 # state B 6. cond if: 'B', then: 7, else: 9 7. write symbol: 'B', goto: 8 8. right goto: 11 9. write symbol: '1', goto: 10 10. right goto: 6 # state C 11. cond if: 'B', then: 12, else: 14 12. write symbol: '1', goto: 13 13. left goto: 11 14. write symbol: '1', goto: 15 15. left goto: 1 # halt 16. halt